@monetgray: "My 94 explorer's headlamps start flickering after 30 minutes of driving. 
The connections are all good, the bulbs are fine and the voltage is
constant.
any ideas out there please?
Thanks!"
    @scooke: "You mean flickering (like a candle in the wind) or flashing (on & off)?
If it's the former. bad ground or connection. If it's the latter,
headlight circuit breaker is ready to quit.
<quote>"
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